87840707 has 2 divisors, whose sum is σ = 87840708. Its totient is φ = 87840706.

The previous prime is 87840691. The next prime is 87840719. The reversal of 87840707 is 70704878.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87840707 - 2⁴ = 87840691 is a prime.

It is a super-3 number, since 3×87840707³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (87840107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43920353 + 43920354.

It is an arithmetic number, because the mean of its divisors is an integer number (43920354).

Almost surely, 2^87840707 is an apocalyptic number.

87840707 is a deficient number, since it is larger than the sum of its proper divisors (1).

87840707 is an equidigital number, since it uses as much as digits as its factorization.

87840707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 87840707 is about 9372.3373285430. The cubic root of 87840707 is about 444.5274738466.

The spelling of 87840707 in words is "eighty-seven million, eight hundred forty thousand, seven hundred seven".